initial commit

README.md

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+# Server tools
+
+Install: clone the repository and add that directory to your $PATH
+
+\
+
+## Pushing changes
+
+Changes can only be pushed by owner and colaborators of this project. To preserve privacy of systems, configure project as such:
+
+```bash
+git config user.email "root@localhost"
+git config user.email "root"
+```

docker-db-dump

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+#!/bin/bash
+# @params:
+#  1* => docker database running container name
+#  2* => directory to place compressed backups when finished
+#  3  => (optional) number of backups to keep
+
+## NEEDS packages: cpulimit
+
+set -o allexport
+if [[ $1 == '' || $2 == '' ]]; then
+	echo 'E| Parameters are incorrect. Please specify "container_name /path/for/backups"'
+	exit 1
+fi
+
+[[ ! -d $2 ]] && mkdir -p $2
+
+set -e
+umask 077
+CLIM1=${CPU_LIMIT_DUMP:-70}
+CLIM2=${CPU_LIMIT_XZ:-20}
+IMGTYPE=$(docker inspect --format='{{.Config.Image}}' $1 | cut -f1 -d:)
+[[ $BACKTS == '' ]] && BACKTS=`date +"%Y%m%d"`.`echo $RANDOM|md5sum|head -c8`
+TMPDIR=/var/tmp/dumps
+mkdir -p $TMPDIR
+
+echo 'docker-db-dump: '$1-$BACKTS
+
+if [[ $IMGTYPE == 'postgres' ]]; then
+	docker exec $1 env | grep -i postgres_ > /tmp/.env-docker-db-dump
+	source /tmp/.env-docker-db-dump && rm /tmp/.env-docker-db-dump
+	DB=${POSTGRES_DB}
+	if [[ $DB == '' ]]; then
+		DB=${POSTGRES_USER}
+	fi
+	DBU=''
+	if [[ $POSTGRES_USER != '' ]]; then
+		DBU='-U'${POSTGRES_USER}
+	fi
+	cpulimit -l $CLIM1 -f -- nice -n 19 docker exec -upostgres $1 \
+		pg_dump $DBU $DB > $TMPDIR/$1.sql
+
+elif [[ $IMGTYPE == 'mariadb' || $IMGTYPE == 'mysql' ]]; then
+	cat <<EOLFF > /tmp/.mysql-docker-db-dump
+#!/bin/bash
+if [[ \$MYSQL_ROOT_PASSWORD != '' ]]; then
+  mysqldump -uroot -p\$MYSQL_ROOT_PASSWORD \$MYSQL_DATABASE
+else
+  mysqldump -u\$MYSQL_USER -p\$MYSQL_PASSWORD \$MYSQL_DATABASE
+fi
+rm /docker-db-dump.sh
+EOLFF
+	chmod +x /tmp/.mysql-docker-db-dump
+	docker cp /tmp/.mysql-docker-db-dump $1:/docker-db-dump.sh
+	rm /tmp/.mysql-docker-db-dump
+	cpulimit -l $CLIM1 -f -- nice -n 19 docker exec $1 \
+		/docker-db-dump.sh > $TMPDIR/$1.sql
+
+else
+	echo 'FATAL: image not supported "'$IMGTYPE'"'
+	exit 2
+fi
+
+set -x
+cpulimit -l $CLIM2 -f -- nice -n 19 xz -9 $TMPDIR/$1.sql
+mv $TMPDIR/$1.sql.xz $2/$BACKTS-$1.sql.xz
+
+cd $2/
+if [[ $? == 0 ]]; then
+	rmkeep $1.sql.xz ${3:-14} # days to keep by default
+fi

rmkeep

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+#!/bin/bash
+MAXN=${2:-30}
+num=$(ls -1rt | grep -- $1 | wc -l)
+if [[ $num -lt $(($MAXN-1)) ]]; then
+	exit 1
+fi
+
+num=$(($num-$MAXN))
+for fil in $(ls -1rt | grep -- $1 | head -n $num); do
+	rm -v $fil
+done